91         int tail;  member
105 	if (eerb->head < eerb->tail)  in dasd_eer_get_free_bytes()
106 		return eerb->tail - eerb->head - 1;  in dasd_eer_get_free_bytes()
107 	return eerb->buffersize - eerb->head + eerb->tail -1;  in dasd_eer_get_free_bytes()
117 	if (eerb->head >= eerb->tail)  in dasd_eer_get_filled_bytes()
118 		return eerb->head - eerb->tail;  in dasd_eer_get_filled_bytes()
119 	return eerb->buffersize - eerb->tail + eerb->head;  in dasd_eer_get_filled_bytes()
166  		tailindex = eerb->tail / PAGE_SIZE;  in dasd_eer_read_buffer()
167  		localtail = eerb->tail % PAGE_SIZE;  in dasd_eer_read_buffer()
172 		eerb->tail += len;  in dasd_eer_read_buffer()
173 		if (eerb->tail == eerb->buffersize)  in dasd_eer_read_buffer()
174 			eerb->tail = 0; /* wrap around */  in dasd_eer_read_buffer()
175 		BUG_ON(eerb->tail > eerb->buffersize);  in dasd_eer_read_buffer()
195 			eerb->tail += eerb->residual;  in dasd_eer_start_record()
196 			if (eerb->tail >= eerb->buffersize)  in dasd_eer_start_record()
197 				eerb->tail -= eerb->buffersize;  in dasd_eer_start_record()
202 		eerb->tail += tailcount;  in dasd_eer_start_record()
203 		if (eerb->tail >= eerb->buffersize)  in dasd_eer_start_record()
204 			eerb->tail -= eerb->buffersize;  in dasd_eer_start_record()
623 					eerb->head != eerb->tail);  in dasd_eer_read()
659 	if (eerb->head != eerb->tail)  in dasd_eer_poll()